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atomic: provide seq_cst semantics on powerpc
authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 22 Sep 2011 00:25:20 +0000 (20:25 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 22 Sep 2011 00:25:20 +0000 (20:25 -0400)
We provide sequential consistency semantic over all architectures for
cmpxchg and add_return family of primitives, but the powerpc
implementation does not match that.

Change the isync after the atomic primitives to sync, and explain the
scheme.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

No differences found
Userspace RCU (urcu) for Linux
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